java后台接收微信小程序发送的post请求参数

// 微信端:data数据要加上JSON转换JSON.stringify()

wx.request({

  url: 'http://127.0.0.1:8080/login', //仅为示例，并非真实的接口地址

  method: "POST",

  data: JSON.stringify({

    code: self.code

  }),

  header: {

    'content-type': 'application/x-www-form-urlencoded"' // 默认值

  },

  success(res) {

    console.log(res.data)

  }

})

// java端:通过参数HttpServletRequest request解析出json格式的参数
// json包用的阿里的 com.alibaba.fastjson.JSONObject; 
JSONObject result = null; 

StringBuilder sb = new StringBuilder();

try (BufferedReader reader = request.getReader();) {

    char[] buff = new char[1024];

    int len;

    while ((len = reader.read(buff)) != -1) {

    sb.append(buff, 0, len);

}

result = JSONObject.parseObject(sb.toString());

} catch (IOException e) {

    e.printStackTrace();

}

result.getString("code"); // 拿到微信端传过来的参数